Fire-proof material for filling safes



AJ 113 51; A l 223mm UNITE] ft?! CE.

msflmmmssmg R ononon KELLY, OF CHICAGO, ILLINOIS.

FIRE-PROOF MATEai/AL FOR FlLLING SAFES, DOORS, aw.

SFECIFICATIOK forming part of Letters Patent No. 283,789, dated August28, 1883.

Application filed January-3|, 1883. (No npecimem.)

To all whomit may concern:

Be it known that I, Gnomes KELLY, a citizen ot' the United States, and aresident of Chicago, in the county of Cook and Stazc 01 Illinois, haveinvented anew and useful Fire- Proot- Material for Filling Safes, Doors,Shuttors, &c., of which the following is a specification.

My invention relates to improi'cments in that class of materials. whichare used as fireproof fillings or linings for safes, am, so as topreventaccess of heat through the walls of such articles; and my im,rsvement has for its object to furnish a cheap and easily appliedfilling possessing to a marked degree non-couducting properties.

To enable those skilled in the art to which my invention appertains tomaize use of and apply my improved maicri 11, I will no more fullydescribe the same and its method of applieation.

To form my improved non-conducting filing I make use of silicate of sodaor pomxa, or what iscommonly known as "soluble glass? I prefer to usesuch material in a semi-liquid state, in which condition it remains inthe cavizy c. the safe-wall, &c., to which it is'applied until sucharticle is exposed to an excessive heat, when such material desiecatesand swells up into a spongy or cellular mass, which possenses to anextraordinary degree non-conducting and heat-resisting properties. Forsome special purposes the semi-fluid mass of soluble glas may itsdcsiccat ed into such solid, spongy or cellular more; and he used in theform of cakes, slabs, or in a crushed condition, as desired or foundmost convenient.

I am aware that prior to my invention silicatc of soda. has hccnemployed as a cementing material for non-ccmducting substances intire-proof fillings for safes, I therefore do not claim such mode ofapplication; but

\Vhat I do cluim,and desire to secure by Let ters Patent, is

1. A lining for fire-proof safes and other articles, composed solely ofsoluble glass, as described, and for the purpose set forth.

2,.A lining for fire-proof safes and other articles, composed solely ofsoluble glass in a semi-fluid state, as described, and for the purposesetforth.

3. As an improved article of manufacture, a lining for fire-proof satesand other articles, composed solely of soluble glass desiccated into aspongy or cellular mass.

In testimony whereof, witness my hand this 27th day of January, 1883.

- GEORGE KELLY.

In presence of- Ronsn'r BURNS, J. Tnoarrsox.

